Painting device for constructional engineering

Abstract

The utility model relates to a painting device for constructional engineering, which comprises a moving frame, a three-axis moving structure, a painting structure and a feeding structure, the three-axis moving structure is mounted on the moving frame, the feeding structure is mounted on the moving frame and connected with the painting structure, the three-axis moving structure is composed of an X-axis moving structure, a Y-axis moving structure and a Z-axis moving structure, and the X-axis moving structure is connected with the Y-axis moving structure. The three-axis moving structure is provided with a reciprocating painting driving structure, the painting structure is installed on the reciprocating painting driving structure, and the painting structure is provided with an elastic structure capable of achieving stretching and retracting of the painting structure and a steering structure capable of achieving rotation of the sight line painting structure. The reciprocating painting structure comprises a second driving motor installed on the Y-axis moving structure and a connecting block installed on the Y-axis moving structure, a gear is installed at the output end of the second driving motor, a plug pin penetrates through the connecting block, and a second gear is arranged at the outer end of the plug pin. The wall painting device solves the problem that an existing painting device cannot guarantee completeness of wall painting.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a painting device for construction engineering. Background Art

[0002] When painting the wall, a painting device is used to replace manual operation. However, the existing painting device has certain defects and cannot ensure the uniformity of the wall painting and cannot achieve a complete painting without dead angles.

[0003] In order to deal with such problems, Chinese patent CN112627468B, a swing-type building decoration wall painting device points out that first, a preliminary painting mechanism includes a rotating rod and a rolling roller, a rotating rod is rotatably connected to a connecting frame, a rolling roller is fixed to the rotating rod, and the rolling roller is used to perform preliminary painting on the wall surface, and then, through the swing painting mechanism and the telescopic spring, the movable rod drives the swing rod and the upper device to swing back and forth up and down, so that the painting roller brushes the wall surface up and down to fully paint the wall surface, and the wall surface is fully painted in place. Figure 2 , Attachment Figure 4 And attached Figure 5 It can be seen that the so-called up and down reciprocating swing refers to the semicircular rotation of the swing rod about the axis of the movable rod, so as to paint the wall back and forth to ensure the uniformity of the painting.

[0004] Although the above document can improve the uniformity of wall painting, there are still certain problems. First, the repeated semicircular painting cannot contact the upper and lower edges of the wall, resulting in incomplete painting. Therefore, in order to solve such problems, a painting device for construction engineering is proposed. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a painting device for construction engineering, which solves the problem that the prior painting device cannot ensure the integrity of wall painting.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a painting device for construction engineering, comprising a mobile frame, a three-axis mobile structure, a painting structure, and a feeding structure, wherein the three-axis mobile structure is mounted on the mobile frame, the feeding structure is mounted on the mobile frame and connected to the painting structure, the three-axis mobile structure is composed of an X-axis mobile structure, a Y-axis mobile structure, and a Z-axis mobile structure, a reciprocating painting drive structure is mounted on the three-axis mobile structure, the painting structure is mounted on the reciprocating painting drive structure, and an elastic structure capable of realizing the extension and retraction of the painting structure and the rotation of the sight painting structure is mounted on the painting structure The steering structure, its reciprocating painting structure includes a second driving motor installed on the Y-axis moving structure and a connecting block installed on the Y-axis moving structure, a gear is installed at the output end of the second driving motor, a pin is passed through the connecting block, a second gear is arranged at the outer end of the pin, the second gear and the gear form a transmission, a painting structure is installed on the surface of the pin, the steering structure includes a third driving motor installed on the painting structure and a ring installed on the periphery of the painting structure, the output end of the third driving motor is connected to a fourth gear, the fourth gear and the painting structure form a gear transmission, and the elastic structure is installed in the painting structure.

[0007] Through the above technical scheme, further, the painting structure includes a rotating tube movably installed in a circular ring and a rotating body installed on the surface of the pin, the circular ring is installed on the upper end face of the rotating body, the rotating tube is connected to the third gear through an axis toward the fourth gear side, the fourth gear and the third gear constitute a gear transmission, an elastic structure is provided in the rotating tube, the elastic structure is a telescopic spring, and a telescopic tube is movably installed in the rotating tube, the end face of the telescopic tube is connected to the telescopic spring, a feed box is installed on the outer end face of the telescopic tube, a connecting rod is installed on the outer end face of the telescopic tube near the bottom of the feed box, a roller brush is movably installed on the surface of the connecting rod, the roller brush is in contact with the lower surface of the feed box, the interior of the feed box is a cavity, and an opening is provided on the lower surface of the feed box corresponding to the roller brush, and a feed pipe is provided on the upper surface of the feed box.

[0008] Furthermore, the frame structure includes a vertical plate, an opening is provided on the surface of the vertical plate, and its X-axis moving structure includes a first movable plate mounted on the surface of the opening, the upper end surface of the first movable plate is located in the opening and a first servo motor is installed, the output end of the first servo motor is connected to a screw through a coupling, a bearing seat is also provided on the surface of the first movable plate, one end of the screw is connected to the inner ring of the bearing seat, a second movable plate is movably installed on the surface of the screw, and the Y-axis moving structure is installed on the second movable plate.

[0009] As a preferred technical solution, a slide rail is installed on the upper surface of the first movable plate, a slider is movably installed on the surface of the slide rail, and the upper surface of the slider is connected to the lower end surface of the second movable plate located above the first movable plate.

[0010] Furthermore, the Y-axis moving structure includes a second servo motor installed at the lower end of the second moving plate and a second movable plate movably installed on the surface of the second moving plate. The second servo motor is installed on the lower end surface of the second movable plate. The output end of the second servo motor is connected to a gear, and the gear and the second long tooth form a gear transmission.

[0011] As a preferred technical solution, the mobile frame also includes a column, and connecting plates are installed on both sides of the column. The connecting plates are fixedly connected to the opposite sides of the column. Its Z-axis moving structure includes a third long tooth installed on the rear end face of the column, and a third servo motor is installed on the upper end face of the first movable plate located behind the column. The output end of the third servo motor is connected to the first gear, and the first gear and the third long tooth constitute a gear transmission.

[0012] Furthermore, a bearing seat is provided on the side of the circular ring, and the shaft of the rotating tube on the side facing the fourth gear is fixedly connected to the inner ring of the bearing seat.

[0013] As a preferred technical solution, the mobile frame also includes a base plate, which has protrusions on both sides of the upper surface of the base plate, and a first mobile plate is movably installed on the surface of the protrusion through a pulley, a first driving motor is provided on the upper surface of the first mobile plate, and a first long tooth is provided on the upper surface of the base plate. The output end of the first driving motor is connected to a gear, and an opening is provided on the upper surface of the first mobile plate corresponding to the gear, and the gear and the first long tooth constitute a gear transmission.

[0014] Furthermore, the feeding structure includes a storage box installed on the upper end surface of the first movable plate, the upper surface of the storage box is provided with a feeding opening, a paint pump is arranged in the storage box, the discharge port of the paint pump is connected to a conduit, and the conduit is connected to the feeding pipe.

[0015] Compared with the prior art, the utility model provides a painting device for construction engineering, which has the following beneficial effects:

[0016] 1. Through the reciprocating painting drive structure and the steering structure, the painting structure can be painted without dead angles and the integrity of the painting can be guaranteed. Specifically, the second driving motor drives the pin to rotate through the second gear and the gear, thereby driving the rotating body installed on the surface of the pin to rotate, thereby driving the painting structure installed on the upper end of the rotating body to swing up and down. In this way, the painting efficiency of the wall can be improved, and the fourth gear 35 at the output end of the third driving motor 27 and the painting structure form a gear transmission to drive the painting mechanism to rotate 90° (without distinguishing between clockwise and counterclockwise), and then the painting structure contacts the upper edge area of ​​the wall. At this time, it is only necessary to drive the painting structure to move back and forth left and right through the X-axis moving structure and drive the painting structure to move upward through the Z-axis moving structure, thereby achieving a painting method without dead angles on the wall, and the painting device can not only ensure the painting efficiency, but also ensure the integrity of the wall painting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a painting device for construction engineering of the utility model;

[0018] Figure 2 This is a schematic diagram of the column structure of a painting device for construction engineering of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first movable plate of a painting device for construction engineering of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation position of the first servo motor structure of a painting device for construction engineering of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation position of the third servo motor structure of a painting device for construction engineering of the utility model;

[0022] Figure 6 This is a schematic diagram of the painting structure of a painting device for construction engineering of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the first movable plate of a painting device for construction engineering of the utility model;

[0024] Figure 8 The utility model is a painting device for construction engineering Figure 7 A top-down three-dimensional structural diagram;

[0025] Fig. 9 The utility model is a painting device for construction engineering Figure 7 A front view structural diagram of ;

[0026] Fig.10 The utility model is a painting device for construction engineering Figure 7 A right view structural diagram of ;

[0027] Fig.11 The utility model is a painting device for construction engineering Fig. 9 AA cross-sectional view of ;

[0028] Fig.12 The utility model is a painting device for construction engineering Figure 7 A local enlarged structural schematic diagram;

[0029] Fig.13 The utility model is a painting device for construction engineering Figure 2 A schematic diagram of the local enlarged structure at B;

[0030] Fig.14 The utility model is a painting device for construction engineering Figure 5 A schematic diagram of the local enlarged structure at C;

[0031] Fig.15 The utility model is a painting device for construction engineering Figure 2 A schematic diagram of the local enlarged structure at D;

[0032] Fig.16 The utility model is a painting device for construction engineering Figure 4 A schematic diagram of the local enlarged structure at E;

[0033] Fig.17 The utility model is a painting device for construction engineering Figure 8 Schematic diagram of the local enlarged structure at F.

[0034] In the figure: 1, bottom plate; 2, first movable plate; 3, vertical plate; 4, first drive motor; 5, pulley; 6, first strip tooth; 7, opening; 8, first movable plate; 9, first servo motor; 10, slide rail; 11, lead screw; 12, second movable plate; 13, second strip tooth; 14, second servo motor; 15, column; 16, connecting plate; 17, third strip tooth; 18, bearing seat; 19, third servo motor; 20, first gear; 21, second drive motor; 22, connecting block; 23, second gear; 24, second movable plate; 25, slider; 26, rotating body; 27, third drive motor; 28, ring; 29, rotating tube; 30, feed box; 31, roller brush; 32, connecting rod; 33, telescopic tube; 34, third gear; 35, fourth gear; 36, feed tube; 37, telescopic spring; 38, storage box; 39, catheter. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Example

[0037] See also Figure 1-17 The utility model provides the following technical solutions: a painting device for construction engineering, comprising a mobile frame, a three-axis mobile structure, a painting structure, and a feeding structure. The three-axis mobile structure is installed on the mobile frame, the feeding structure is installed on the mobile frame and connected to the painting structure, the three-axis mobile structure is composed of an X-axis mobile structure, a Y-axis mobile structure, and a Z-axis mobile structure. A reciprocating painting drive structure is installed on the three-axis mobile structure, the painting structure is installed on the reciprocating painting drive structure, and an elastic structure capable of realizing the extension and contraction of the painting structure and a steering structure capable of rotating the sight painting structure are installed on the painting structure. The reciprocating painting structure includes an installation A second drive motor 21 is mounted on the Y-axis moving structure, and a connecting block 22 is mounted on the Y-axis moving structure. A gear is mounted on the output end of the second drive motor 21. A pin is passed through the connecting block 22. A second gear 23 is arranged on the outer end of the pin. The second gear 23 and the gear form a transmission. A painting structure is mounted on the surface of the pin. The steering structure includes a third drive motor 27 mounted on the painting structure and a ring 28 mounted on the periphery of the painting structure. A fourth gear 35 is connected to the output end of the third drive motor 27. The fourth gear 35 and the painting structure form a gear transmission. The elastic structure is mounted in the painting structure.

[0038] In this embodiment, the specific working principle is: when in use, pour the paint onto the feeding structure, and then enter the painting structure, and drive the painting structure to move in three directions of left and right, front and back, and up and down through the three-axis moving structure, and then drive the painting structure to swing up and down through the reciprocating painting driving structure. During the swinging process, its X-axis moving structure drives the painting structure to move left and right, so that the painting position will be repeatable, thereby improving the painting efficiency of the painting. When the wall painting in an area is completed, its Z-axis moving structure drives the painting structure to move up and down. When the painting structure swings up and down, its Y-axis moving structure will move back and forth according to the moving direction of the painting structure. When its Y-axis moving structure drives the painting structure to move forward, its painting structure moves upward or downward. When the painting structure is perpendicular to the wall, the Y-axis moving structure drives the painting structure to move backward, thereby preventing the painting structure and the wall from being stuck. The up and down movement of the painting structure is achieved by the second driving motor 21 through the second gear 23 and the gear to form a transmission, which drives the pin to rotate, and then drives the paint brush installed on the surface of the pin to rotate, thereby realizing an up and down reciprocating painting method. Secondly, in order to prevent the jamming phenomenon that occurs during the painting process when the painting structure reciprocates up and down, the elastic structure can make the painting structure have a telescopic function when jamming occurs, thereby preventing jamming with the wall. When the painting structure is about to contact the upper edge of the wall, the fourth gear 35 at the output end of the third driving motor 27 and the painting structure form a gear transmission to drive the painting mechanism to rotate 90° (without distinguishing between clockwise and counterclockwise), and then the painting structure contacts the wall. At this time, it is only necessary to drive the painting structure to reciprocate left and right through the X-axis moving structure and drive the painting structure to move upward through the Z-axis moving structure, thereby realizing a painting method for the wall without dead angles.

[0039] According to the above, the specific structure of the painting can be found in Figure 5-8It can be seen that the painting structure includes a rotating tube 29 movably installed in the ring 28 and a rotating body 26 installed on the surface of the pin, the ring 28 is installed on the upper end surface of the rotating body 26, the rotating tube 29 is connected to the third gear 34 through an axis toward the fourth gear 35 side, the fourth gear 35 and the third gear 34 form a gear transmission, so that the fourth gear 35 can be driven to rotate by the third driving motor 27 to realize the rotation of the rotating tube 29, an elastic structure is provided in the rotating tube 29, the elastic structure is a telescopic spring 37, and a telescopic tube 33 is movably installed in the rotating tube 29, the end surface of the telescopic tube 33 is connected to the telescopic spring 37, but the telescopic tube 33 is not fixedly connected to the rotating tube 29, and the two are movably connected, and a feed box 30 is installed on the outer end surface of the telescopic tube 33, and a connecting rod 32 is installed on the outer end surface of the telescopic tube 33 near the bottom of the feed box 30, connecting A roller brush 31 is movably installed on the surface of the rod 32, and the roller brush 31 is in contact with the lower surface of the feed box 30. The interior of the feed box 30 is a cavity, and an opening is provided on the lower surface of the feed box 30 corresponding to the roller brush 31. A feed pipe 36 is provided on the upper surface of the feed box 30, and then when the roller brush 31 is in contact with the wall, the telescopic tube 33 is telescoped into the rotating tube 29 through the action of the telescopic spring 37, thereby preventing the telescopic tube 33 from getting stuck with the wall. It should be understood that one end of the telescopic spring 37 is fixedly connected to the rotating tube 29, so one end of the telescopic spring 37 is fixedly connected to the rotating tube 29, and the other end is fixedly connected to the telescopic tube 33. The outer surface of the telescopic spring 37 is not connected to the rotating tube 29 and is movable, thereby preventing the telescopic tube 33 from rotating without affecting the telescopic tube 33.

[0040] See also Figure 4 It can be seen that the frame structure includes a vertical plate 3, and an opening 7 is opened on the surface of the vertical plate 3. Its X-axis moving structure includes a first movable plate 8 mounted on the surface of the opening 7. The upper end surface of the first movable plate 8 is located in the opening 7 and a first servo motor 9 is installed. The output end of the first servo motor 9 is connected to a screw 11 through a coupling. A bearing seat 18 is also provided on the surface of the first movable plate 8. One end of the screw 11 is connected to the inner ring of the bearing seat 18. A second movable plate 24 is movably installed on the surface of the screw 11. The second movable plate 24 is installed with a Y-axis moving structure. The first servo motor 9 drives the screw 11 to rotate, thereby driving the second movable plate 24 to move.

[0041] In order to ensure the stability of the movement of the second moving plate 24, please refer to Fig.16 It can be seen that a slide rail 10 is installed on the upper end surface of the first movable plate 8 , a slider 25 is movably installed on the surface of the slide rail 10 , and the upper surface of the slider 25 is connected to the lower end surface of the second movable plate 24 located above the first movable plate 8 .

[0042] See also Figure 5 , Figure 7 , Fig.12It can be seen that the Y-axis moving structure includes a second servo motor 14 installed at the lower end of the second movable plate 24 and a second movable plate 12 movably installed on the surface of the second movable plate 24. The second servo motor 14 is installed on the lower end surface of the second movable plate 12. The output end of the second servo motor 14 is connected to a gear. The gear and the second long teeth 13 form a gear transmission. Through the gear transmission, the second movable plate 12 can be moved in the front and rear directions.

[0043] For details about the mobile framework, please refer to Figure 1 It can be seen that in order to improve the stability of the upright plate 3, the mobile frame further includes a column 15, and connecting plates 16 are installed on both sides of the column 15. The connecting plates 16 are fixedly connected to the opposite sides of the upright plate 3. Figure 2 and Fig.13 It can be seen that its Z-axis moving structure includes a third long tooth 17 installed on the rear end face of the column 15, and a third servo motor 19 is installed on the upper end face of the first movable plate 8 located behind the column 15. The output end of the third servo motor 19 is connected to the first gear 20, and the first gear 20 and the third long tooth 17 form a gear transmission.

[0044] In order to ensure the stability of the rotation of the rotating tube 29 and prevent the rotating tube 29 from moving, a bearing seat is provided on the side of the ring 28, and the shaft located on the side of the rotating tube 29 facing the fourth gear 35 is fixedly connected to the inner ring of the bearing seat.

[0045] Mobile framework can also be found in detail Figure 1 and Figure 3 It can be seen that the mobile frame also includes a base plate 1, which has protrusions on both sides of the upper end surface, and a first mobile plate 2 is movably installed on the surface of the protrusion through a pulley 5. A first driving motor 4 is provided on the upper surface of the first mobile plate 2, and a first long tooth 6 is provided on the upper surface of the base plate 1. The output end of the first driving motor 4 is connected to a gear, and an opening is provided on the upper surface of the first mobile plate 2 corresponding to the gear. The gear and the first long tooth 6 constitute a gear transmission, thereby realizing the movement of the first mobile plate 2, so that the painting structure can change the painting position.

[0046] In order to ensure that the painting structure can continuously paint the wall, please refer to Figure 1 And combined Fig.11 It can be seen that the feeding structure includes a storage box 38 installed on the upper end surface of the first movable plate 2. The upper surface of the storage box 38 is provided with a feeding opening. The paint flowing out through the opening contacts the roller brush 31, thereby painting the wall. A paint pump is provided in the storage box 38. The discharge port of the paint pump is connected to a conduit 39, and the conduit 39 is connected to the feeding pipe 36.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A painting device for construction engineering, comprising a mobile frame, a three-axis mobile structure, a painting structure, and a feeding structure, wherein the three-axis mobile structure is mounted on the mobile frame, the feeding structure is mounted on the mobile frame and connected to the painting structure, and the three-axis mobile structure is composed of an X-axis mobile structure, a Y-axis mobile structure, and a Z-axis mobile structure, and is characterized in that: A reciprocating paint driving structure is installed on the three-axis moving structure, and the paint structure is installed on the reciprocating paint driving structure. The paint structure is installed with an elastic structure capable of realizing the extension and contraction of the paint structure and a steering structure capable of rotating the paint structure. The reciprocating paint structure comprises a second drive motor (21) installed on the Y-axis moving structure and a connecting block (22) installed on the Y-axis moving structure. A gear is installed at the output end of the second drive motor (21). A latch is passed through the connecting block (22). A second gear (23) is arranged at the outer end of the latch. The second gear (23) and the gear form a transmission. The paint structure is installed on the surface of the latch. The steering structure comprises a third drive motor (27) installed on the paint structure and a ring (28) installed on the periphery of the paint structure. The output end of the third drive motor (27) is connected with a fourth gear (35). The fourth gear (35) and the paint structure form a gear transmission. The elastic structure is installed in the paint structure.

2. A painting device for construction engineering according to claim 1, characterized in that: The painting structure comprises a rotating tube (29) movably mounted in a circular ring (28) and a rotating body (26) mounted on the surface of the latch, wherein the circular ring (28) is mounted on the upper end surface of the rotating body (26), the rotating tube (29) is connected to a third gear (34) via an axis on the side facing the fourth gear (35), the fourth gear (35) and the third gear (34) form a gear transmission, an elastic structure is arranged in the rotating tube (29), the elastic structure is a telescopic spring (37), and a telescopic tube (33) is movably mounted in the rotating tube (29), the telescopic tube (33) The end surface of the telescopic tube (33) is connected to the telescopic spring (37), a feed box (30) is installed on the outer end surface of the telescopic tube (33), a connecting rod (32) is installed on the outer end surface of the telescopic tube (33) near the bottom of the feed box (30), a roller brush (31) is movably installed on the surface of the connecting rod (32), the roller brush (31) is in contact with the lower surface of the feed box (30), the inside of the feed box (30) is a cavity, and an opening is opened at the lower surface of the feed box (30) corresponding to the roller brush (31), and a feed pipe (36) is provided on the upper surface of the feed box (30).

3. A painting device for construction engineering according to claim 1, characterized in that: The movable frame comprises a vertical plate (3), the surface of the vertical plate (3) is provided with an opening (7), and its X-axis movable structure comprises a first movable plate (8) sleeved on the surface of the opening (7), the upper end surface of the first movable plate (8) is located in the opening (7) and is provided with a first servo motor (9), the output end of the first servo motor (9) is connected to a lead screw (11) via a coupling, a bearing seat (18) is also provided on the surface of the first movable plate (8), one end of the lead screw (11) is connected to the inner ring of the bearing seat (18), a second movable plate (24) is movably installed on the surface of the lead screw (11), and a Y-axis movable structure is installed on the second movable plate (24).

4. A painting device for construction engineering according to claim 3, characterized in that: A slide rail (10) is installed on the upper end surface of the first movable plate (8), a slider (25) is movably installed on the surface of the slide rail (10), and the upper surface of the slider (25) is connected to the lower end surface of the second movable plate (24) located above the first movable plate (8).

5. A painting device for construction engineering according to claim 1, characterized in that: The Y-axis moving structure comprises a second servo motor (14) mounted on the lower end of a second moving plate (24) and a second movable plate (12) movably mounted on the surface of the second moving plate (24); the second servo motor (14) is mounted on the lower end surface of the second movable plate (12); a gear is connected to the output end of the second servo motor (14); and the gear and the second long tooth (13) form a gear transmission.

6. A painting device for construction engineering according to claim 1, characterized in that: The movable frame also includes a column (15), and connecting plates (16) are installed on both sides of the column (15). The connecting plates (16) are fixedly connected to the opposite sides of the vertical plate (3). Its Z-axis movable structure includes a third long tooth (17) installed on the rear end surface of the column (15), and a third servo motor (19) is installed on the upper end surface of the first movable plate (8) located behind the column (15). The output end of the third servo motor (19) is connected to a first gear (20), and the first gear (20) and the third long tooth (17) form a gear transmission.

7. A painting device for construction engineering according to claim 2, characterized in that: A bearing seat is provided on the side of the circular ring (28), and the shaft thereof, which is located on the side of the rotating tube (29) facing the fourth gear (35), is fixedly connected to the inner ring of the bearing seat.

8. A painting device for construction engineering according to claim 1, characterized in that: The mobile frame also includes a bottom plate (1), the bottom plate (1) has protrusions on both sides of the upper end surface, a first mobile plate (2) is movably mounted on the surface of the protrusions through a pulley (5), a first driving motor (4) is arranged on the upper surface of the first mobile plate (2), a first long tooth (6) is arranged on the upper surface of the bottom plate (1), a gear is connected to the output end of the first driving motor (4), an opening is opened on the upper surface of the first mobile plate (2) at a position corresponding to the gear, and the gear and the first long tooth (6) form a gear transmission.

9. A painting device for construction engineering according to claim 1, characterized in that: The feeding structure comprises a storage box (38) mounted on the upper end surface of the first movable plate (2), the upper surface of the storage box (38) is provided with a feeding opening, a paint pump is arranged in the storage box (38), the discharge port of the paint pump is connected to a conduit (39), and the conduit (39) is connected to the feeding pipe (36).

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